Watchman&#39;s time-detector.



UNITED STATES Patented November 8, 1904.

PATENT UEE EE.

WATCHIVIANS TIME-DETECTOR.

SPEGIFIGATIONfor-rning part of Letters Patent No. 774,499, datedNovember 8, 1904. Application filed March 3, 1904. Serial No. 196,469.(No model.)

T0 at whom, it nuty concern.-

Be it known that I, JAKoB SOHLENKER, a citizen of the Empire of Germany,residing in Schwenningen, in the Kingdom of Wi'1r temberg and Empire ofGermany, have invented certain new and useful Improvements inl/Vatchmens Time-Detectors, of which the following is a specification.

This invention relates to certain improvements in watchmenstime-detectors with indirect marking systems in which the return of themarking-lever is not produced by means of a spring, but positively bythe motion of an eccentric.

It is well known that springs are not reliable, as they frequently breakor lose their tension. Sometimes it happens that when a spring loses itselasticity the type which has been pressed into the paper is caught bythe same, so that either the stoppage of the driving clock-train of thedetector or the tearing of the paper is produced. A further objection isthat the ward of the key is subjected to a constant pressure, by whichthe same is quickly worn out.

The object of this invention is to overcome these objections. This iseffected in such a manner that the type-levers are returned after themarking is accomplished by an eccentric into their normal positionwithout the use of springs; and the invention consists of a watchmenstime-detector in which the marking-levers are operated by the keys andreturned into their normal position by the action of an eccentricoperated by a suitable connection with the housing of the key, as willbe fully described hereinafter and finally set forth in the claims.

In the accompanying drawings, Figure 1 represents a bottom view of myimproved watchmens time-detector, partly in section, with the bottom ofthe casing removed. Fig. 2 is a vertical transverse section of the sameon line 2 2, Fig.1. Fig. 3 is a side elevation of the portion of thetime-detector shown in Fig. 2, showing the eccentric for returning themarking-pieces. Fig. 4 is a side View of one of the keys suspended atthe different stations. Fig. 5 is a side elevation of two differenttype-levers employed. Figs. 6 and 7 are sectional side elevationsshowing one of the type-levers respectively in normal position beforemarking and in position for marking; and Fig. 8 is a plan view of aportion of the time-detector, showing the faces of a number ofmarking-levers.

Similar letters of reference indicate corresponding parts.

The type-levers a a a are pivoted to a studshaft 6 and form contact attheir forward end with an eccentric 0, while the rear ends of the shanksof the type-levers rest on a transverse pin 0? when the keys are in anormal position of rest. The keys 6, of which one is provided for eachstation, are provided at the end with a projection f, which serves toenter into a corresponding recess of a bushing provided with agear-wheel 71,, that is supported on one of the partition-walls of thecasing of the timedetector. With the gear-wheel it meshes a secondgear-wheel a, which is located on the shaft of the eccentric c, saideccentric being supported in bearings of the partition of the casing anda supporting-block, as shown in Fig. 3. By one single rotation of thekey the gear-wheels 72, and will be turned and simultaneously thetype-levers oscillated by the eccentric. The marking of the type intothe paper disk operated in the well-known manner by the clock-train ofthe time-detector is accomplished by a ward Z: on the key, said wardbeing made of such a shape and at such a distance from the projection fat the end of the key as required by the special type-lever that is tobe called into action by the key, the typelever being operated by theaction of the ward 70, while by the turning of the gear-wheels theeccentric c is simultaneously turned. After the marking type lever orlevers are operated all the levers are returned by the eccentric intonormal position of rest on completion of the rotation of the eccentric,which is accomplished by the further rotation of the key. The key isfurther provided with athird projection Z, which is, like the projectionf, used in all keys and serves for the better guiding of the key in thekeyhole to the gearwheel 7t. Only the ward it changes in position on thedifferent keys, while the projections f and Z remain the same in all thekeys.

as the type-levers are returned by the full rotation of the eccentric.

To prevent the lateral shifting of the typelevers, alternate levers areprovided each with a projection m. This projection is arranged, forexample, on the first, third, and fifth typelevers, the second, fourth,sixth, &c., typelevers not requiring the same. The top plate 0' isprovided with recesses '12 opposite the alternate enlarged levers, asshown in Fig. 8,

which permit the passage of said type-levers provided with theprojection m and provides a positive means of guiding the type-levers attheir upper ends. It has been found that by this arrangement thefriction and strain due to the tendency of the type-levers to lateral ldisplacement instead of being localized in the two end levers areuniformly distributed, so

that all the type-levers are operable with equal facility. In place oftype-levers other devices, such as levers with marking-points, may beemployed.

The described arrangement of the marking 1 construction has theadvantage of great sinii plicity and durability, inasmuch as allsensitive parts, which are liable to become weak or useless, areentirely avoided Without impairing the accurate funetioning of thetypelevers. Even the corrosion of the visible parts of the detector willnot render the same inoperative. t Having thus described my invention, 1claim l as new and desire to secureby Letters .Patent- 1. A markingdevice for watchmens timedetectors, consisting of oscillatingtype-levers, a key for raising the same, and an eccentric acting on saidtype-levers and operated by the 1 turning of the key for returning thetype-le- I vers into normal position of rest. 1 2. A marking device forwatchmens timei detectors,consistingofoscillatingtype-levers, 1 a keyfor raising the same. an eccentric act- 2 ing on said type-levers andoperated by the l turning of the key for returning the type-levers intonormal position of rest, a bushing for the key, and means between saidbushing and the eccentric for transmitting rotary motion to the latter.

In testimony that I claim the foregoing as my invention 1 have signed myname in presence of two subscribing witnesses.

JAKOB SGHLENKER.

\Vitnesses:

Srneramn FELs, ERNST ENTENMAN.

